Low-Field Feshbach Resonances and Three-Body Losses in a Fermionic Quantum Gas of 161Dy


  • E. Soave Institute of Experimental Physics, University of Innsbruck
  • V. Corre Institute of Experimental Physics, University of Innsbruck, Present address: Safran Reosc
  • C. Ravensbergen Institute of Experimental Physics, University of Innsbruck, Present address: ColdQuanta, Oxford Centre for Innovation
  • J.H. Han Institute of Experimental Physics, University of Innsbruck, Present address: Korea Research Institute of Standards and Science
  • M. Kreyer Institute of Experimental Physics, University of Innsbruck
  • E. Kirilov Institute of Experimental Physics, University of Innsbruck, Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences
  • R. Grimm Institute of Experimental Physics, University of Innsbruck, Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences https://orcid.org/0000-0003-1085-5558




ultracold Fermi gases, Feshbach resonances, three-body recombination


We report on the high-resolution Feshbach spectroscopy on a degenerate, spin-polarized Fermi gas of 161Dy atoms, measuring three-body recombination losses at a low magnetic field. For field strengths up to 1 G, we identify as much as 44 resonance features and observe the plateaus of very low losses. For four selected typical resonances, we study the dependence of the threebody recombination rate coefficient on the magnetic resonance detuning and on the temperature. We observe a strong suppression of losses with decreasing temperature already for small detunings from the resonance. The characterization of complex behavior of the three-body losses of fermionic 161Dy is important for future applications of this peculiar species in research on atomic quantum gases.

Author Biography

V. Corre, Institute of Experimental Physics, University of Innsbruck, Present address: Safran Reosc

Present address: Safran Reosc, Sain-Pierre-du-Perray 91280, France


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How to Cite

Soave, E., Corre, V., Ravensbergen, C., Han, J., Kreyer, M., Kirilov, E., & Grimm, R. (2022). Low-Field Feshbach Resonances and Three-Body Losses in a Fermionic Quantum Gas of 161Dy. Ukrainian Journal of Physics, 67(5), 334. https://doi.org/10.15407/ujpe67.5.334



Optics, atoms and molecules